The study consists of a clinical trial comparing a new structured group intervention, denominated "Cognitive-Behavioral Rehabilitation", to treatment as usual (TAU) for bipolar patients. The new approach is a combination of cognitive behavioral strategies and cognitive rehabilitation exercises, consisting of twelve weekly group sessions of 90 minutes each. To be included in the study, patients must be diagnosed with bipolar disorder, type I or II, be 18 to 55 years old, in full or partial remission and have an IQ of at least 80. A comprehensive neuropsychological battery, followed by mood, social functioning and quality of life assessments will occur in three moments: pre and post-intervention and after 12 months.